:root {
    --bg-body: #ffffff;
    --bg-surface: #f7f8fa;
    --bg-card: #ffffff;
    --bg-muted: #f0f2f5;
    --text-primary: #1a1a2e;
    --text-secondary: #5a5f7a;
    --text-tertiary: #8b90a8;
    --primary: #1070FF;
    --primary-hover: #0b5ed7;
    --primary-light: rgba(16,112,255,.06);
    --primary-lighter: rgba(16,112,255,.03);
    --border-color: #e8eaef;
    --border-light: #f0f1f4;
    --shadow-sm: 0 1px 3px rgba(0,0,0,.04);
    --shadow-md: 0 4px 16px rgba(0,0,0,.06);
    --shadow-lg: 0 12px 40px rgba(0,0,0,.08);
    --shadow-xl: 0 24px 64px rgba(0,0,0,.1);
    --container: 1200px;
    --header-h: 68px;
    --radius: 16px;
    --radius-lg: 24px;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;font-size:16px;-webkit-font-smoothing:antialiased}
body{background:var(--bg-body);color:var(--text-primary);font-family:'Inter','Noto Sans SC','PingFang SC','Microsoft YaHei',sans-serif;line-height:1.6;overflow-x:hidden}
a{text-decoration:none;color:inherit;transition:color .2s}
ul{list-style:none}
button{cursor:pointer;border:none;background:none;font-family:inherit}
.container{max-width:var(--container);margin:0 auto;padding:0 24px}
.center{text-align:center}

/* ── navbar ── */
.navbar{position:fixed;top:0;left:0;width:100%;height:var(--header-h);z-index:1000;background:rgba(255,255,255,.85);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border-bottom:1px solid var(--border-light);transition:box-shadow .3s}
.navbar.scrolled{box-shadow:var(--shadow-sm)}
.nav-wrap{height:100%;display:flex;align-items:center;justify-content:space-between;gap:20px}
.nav-left{display:flex;align-items:center;flex-shrink:0}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:1.25rem;color:var(--text-primary);white-space:nowrap}
.logo-icon{width:30px;height:30px;border-radius:6px;object-fit:contain}
.nav-center{flex:1;display:flex;justify-content:center}
.nav-menu{display:flex;gap:6px;padding:5px;border-radius:100px;background:var(--bg-muted)}
.nav-menu li{display:flex;align-items:center}
.nav-menu a{font-size:.88rem;color:var(--text-secondary);font-weight:500;padding:6px 18px;border-radius:100px;transition:all .2s;white-space:nowrap}
.nav-menu a:hover{color:var(--text-primary);background:rgba(255,255,255,.9)}
.nav-right{display:flex;align-items:center;gap:14px;flex-shrink:0}
.btn-text{font-size:.88rem;color:var(--text-secondary);font-weight:500;white-space:nowrap}
.btn-text:hover{color:var(--primary)}
.btn-primary{background:var(--primary);color:#fff;padding:8px 22px;border-radius:100px;font-size:.88rem;font-weight:600;transition:all .2s;white-space:nowrap;display:inline-flex;align-items:center;gap:8px;box-shadow:0 2px 8px rgba(16,112,255,.25)}
.btn-primary:hover{background:var(--primary-hover);transform:translateY(-1px);box-shadow:0 4px 16px rgba(16,112,255,.3)}
.btn-lg{padding:14px 36px;font-size:1.05rem}
.btn-outline{border:1px solid var(--border-color);padding:8px 22px;border-radius:100px;font-size:.88rem;font-weight:500;color:var(--text-primary);transition:all .2s}
.btn-outline:hover{border-color:var(--primary);color:var(--primary);background:var(--primary-light)}

/* ── hero ── */
.hero{padding:150px 0 100px;background:linear-gradient(180deg,var(--primary-lighter) 0%,#fff 70%)}
.hero-inner{display:flex;flex-direction:column;align-items:center;text-align:center}
.hero-badge{display:inline-flex;align-items:center;gap:8px;padding:6px 16px;background:var(--primary-light);border:1px solid rgba(16,112,255,.12);border-radius:100px;font-size:.82rem;color:var(--primary);font-weight:600;margin-bottom:32px}
.pulse{width:6px;height:6px;background:var(--primary);border-radius:50%;box-shadow:0 0 0 3px rgba(16,112,255,.2)}
.hero-title{font-size:4.5rem;line-height:1.08;font-weight:900;margin-bottom:24px;letter-spacing:-.03em;color:var(--text-primary)}
.hero-title em{font-style:normal;color:var(--primary)}
.hero-desc{font-size:1.2rem;color:var(--text-secondary);max-width:600px;margin-bottom:48px;line-height:1.65}
.hero-actions{display:flex;gap:14px;margin-bottom:80px}

/* ── mockup ── */
.mockup-wrap{width:100%;max-width:1040px;perspective:1200px}
.mockup{background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius);box-shadow:var(--shadow-xl);overflow:hidden;transform:rotateX(2deg)}
.mockup-bar{height:42px;background:var(--bg-surface);border-bottom:1px solid var(--border-light);display:flex;align-items:center;padding:0 18px;gap:18px}
.dots{display:flex;gap:7px}
.dots span{width:10px;height:10px;border-radius:50%}
.dots span:nth-child(1){background:#ff5f57}
.dots span:nth-child(2){background:#febc2e}
.dots span:nth-child(3){background:#28c840}
.tabs{display:flex;gap:22px;margin-left:18px}
.tabs span{font-size:.78rem;color:var(--text-tertiary)}
.tabs span.on{color:var(--primary);font-weight:600}
.mockup-body{height:400px;display:flex;flex-direction:column;padding:28px;gap:16px;background:var(--bg-body)}
.task{display:flex;align-items:center;gap:14px;padding:14px 16px;background:var(--bg-surface);border:1px solid var(--border-light);border-radius:12px}
.task-ico{width:36px;height:36px;border-radius:8px;background:var(--primary-light);display:flex;align-items:center;justify-content:center;font-size:.85rem;flex-shrink:0}
.task-info{flex:1;display:flex;flex-direction:column;gap:3px}
.task-name{font-size:.84rem;color:var(--text-primary);font-weight:500}
.task-meta{font-size:.7rem;color:var(--text-tertiary)}
.task-bar{height:4px;background:var(--bg-muted);border-radius:4px;overflow:hidden;margin-top:2px}
.task-fill{height:100%;border-radius:4px;background:var(--primary)}
.task-speed{font-size:.75rem;color:#16a34a;white-space:nowrap;font-weight:600}
.stats-row{display:flex;gap:14px;margin-top:auto}
.stat-card{flex:1;padding:14px;background:var(--bg-surface);border:1px solid var(--border-light);border-radius:12px;text-align:center}
.stat-val{font-size:1.2rem;font-weight:700;color:var(--text-primary)}
.stat-lbl{font-size:.7rem;color:var(--text-tertiary);margin-top:3px}

/* ── stats bar ── */
.kpi-bar{display:flex;justify-content:center;gap:80px;padding:72px 0;border-bottom:1px solid var(--border-light)}
.kpi{text-align:center}
.kpi-num{font-size:2.8rem;font-weight:800;color:var(--text-primary);line-height:1}
.kpi-label{font-size:.85rem;color:var(--text-tertiary);margin-top:8px}

/* ── section ── */
.section{padding:110px 0}
.section-hd{margin-bottom:72px}
.section-title{font-size:2.8rem;font-weight:800;margin-bottom:18px;color:var(--text-primary)}
.section-sub{font-size:1.08rem;color:var(--text-secondary)}

/* ── bento ── */
.bento{display:grid;grid-template-columns:repeat(3,1fr);grid-template-rows:repeat(2,300px);gap:20px}
.bento-card{background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-lg);overflow:hidden;transition:all .25s}
.bento-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:rgba(16,112,255,.2)}
.bento-card.w2{grid-column:span 2}
.card-body{padding:36px;height:100%;display:flex;flex-direction:column}
.card-body h3{font-size:1.4rem;margin-bottom:14px;font-weight:700}
.card-body p{color:var(--text-secondary);line-height:1.7}
.card-ico{font-size:1.8rem;margin-bottom:20px;width:56px;height:56px;background:var(--primary-light);border-radius:14px;display:flex;align-items:center;justify-content:center;color:var(--primary)}
.tags{display:flex;gap:10px;margin-top:auto;flex-wrap:wrap}
.tags li{padding:5px 14px;background:var(--bg-surface);border-radius:100px;font-size:.82rem;border:1px solid var(--border-light);color:var(--text-secondary)}

/* ── solutions ── */
.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:start}
.sol-tabs{display:flex;flex-direction:column;gap:4px}
.sol-btn{text-align:left;padding:16px 24px;color:var(--text-secondary);font-size:1.05rem;border-left:3px solid transparent;width:100%;background:none;font-family:inherit;border-radius:0 8px 8px 0;transition:all .2s}
.sol-btn.active{color:var(--primary);font-weight:600;border-left-color:var(--primary);background:var(--primary-light)}
.sol-card{background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-lg);padding:44px;box-shadow:var(--shadow-md)}
.sol-hd{display:flex;justify-content:space-between;margin-bottom:20px;align-items:center}
.sol-hd h3{font-size:1.7rem;font-weight:700}
.badge{background:var(--primary-light);color:var(--primary);padding:5px 14px;border-radius:100px;font-size:.78rem;font-weight:600}
.metrics{display:flex;gap:56px;padding-top:36px;border-top:1px solid var(--border-light);margin-top:36px}
.metric strong{display:block;font-size:2.2rem;color:var(--text-primary);line-height:1;margin-bottom:6px;font-weight:800}
.metric span{font-size:.84rem;color:var(--text-tertiary)}

/* ── cta / download ── */
.cta{padding:120px 0;background:var(--bg-surface)}
.cta-title{font-size:3.5rem;line-height:1.1;margin-bottom:20px;font-weight:800}
.cta-title em{font-style:normal;color:var(--primary)}
.cta-desc{font-size:1.15rem;color:var(--text-secondary)}
.dl-opts{display:flex;gap:20px;justify-content:center;margin-top:56px;flex-wrap:wrap}
.dl-card{display:flex;align-items:center;gap:18px;background:var(--bg-card);border:1px solid var(--border-color);padding:22px 28px;border-radius:20px;min-width:270px;text-align:left;transition:all .25s;color:var(--text-primary);cursor:pointer;box-shadow:var(--shadow-sm)}
.dl-card:hover{box-shadow:var(--shadow-lg);border-color:rgba(16,112,255,.2);transform:translateY(-4px)}
.dl-ico{width:38px;height:38px;color:var(--primary);flex-shrink:0}
.dl-label{display:flex;flex-direction:column;flex:1}
.os-name{font-size:1.05rem;font-weight:600;margin-bottom:3px}
.os-ver{font-size:.78rem;color:var(--text-tertiary)}
.dl-arrow{color:var(--primary);font-size:1.1rem;font-weight:700}

/* ── news ── */
.blog-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.blog-card{background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-lg);padding:30px;transition:all .25s}
.blog-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:rgba(16,112,255,.15)}
.blog-date{font-size:.82rem;color:var(--text-tertiary);margin-bottom:10px}
.blog-card h3{font-size:1.1rem;font-weight:600;color:var(--text-primary);margin-bottom:10px;line-height:1.45}
.blog-card p{font-size:.88rem;color:var(--text-secondary);line-height:1.6;margin-bottom:14px;display:-webkit-box;-webkit-line-clamp:3;line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.blog-link{font-size:.88rem;color:var(--primary);font-weight:500}
.blog-link:hover{color:var(--primary-hover)}

/* ── seo articles ── */
.seo-section{padding:110px 0;background:var(--bg-surface)}
.seo-section .section-title{font-size:2.4rem}
.seo-articles{display:grid;gap:24px}
.seo-article{background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-lg);padding:40px;box-shadow:var(--shadow-sm)}
.seo-article h1{font-size:1.8rem;margin-bottom:14px;color:var(--text-primary);font-weight:800}
.seo-article h2{font-size:1.25rem;margin-top:22px;margin-bottom:8px;color:var(--text-primary);font-weight:700}
.seo-article h3{font-size:1rem;margin-top:12px;margin-bottom:6px;color:var(--text-secondary);font-weight:600}
.seo-article p{color:var(--text-secondary);margin-bottom:10px;line-height:1.8}
.kp,.sl{margin:8px 0 14px;padding-left:18px;color:var(--text-secondary)}
.kp{list-style:disc}.sl{list-style:decimal}
.kp li,.sl li{margin-bottom:6px;line-height:1.7}
.faq{margin-top:10px;border:1px solid var(--border-light);border-radius:var(--radius);padding:18px 22px;background:var(--bg-surface)}
.faq dt{font-weight:600;color:var(--text-primary);margin-top:10px}
.faq dd{color:var(--text-secondary);margin:6px 0 10px;line-height:1.7}

/* ── footer ── */
.site-footer{border-top:1px solid var(--border-color);padding:80px 0 48px;color:var(--text-tertiary)}
.ft-top{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:64px;flex-wrap:wrap;gap:36px}
.ft-brand p{margin-top:10px;font-size:.88rem;color:var(--text-tertiary)}
.ft-nav{display:flex;gap:72px;flex-wrap:wrap}
.ft-col h4{color:var(--text-primary);margin-bottom:20px;font-size:.95rem;font-weight:700}
.ft-col ul li{margin-bottom:10px}
.ft-col a{color:var(--text-tertiary);font-size:.88rem}
.ft-col a:hover{color:var(--primary)}
.ft-bottom{border-top:1px solid var(--border-light);padding-top:28px;font-size:.82rem;text-align:center;color:var(--text-tertiary)}

/* ── responsive ── */
@media(max-width:1024px){.nav-center{display:none}.hero-title{font-size:3.2rem}}
@media(max-width:900px){.hero-title{font-size:2.8rem}.bento{grid-template-columns:1fr;grid-template-rows:auto}.bento-card.w2{grid-column:span 1}.split{grid-template-columns:1fr}.blog-grid{grid-template-columns:1fr}.kpi-bar{flex-direction:column;gap:36px;align-items:center}.ft-top{flex-direction:column}.ft-nav{gap:36px;width:100%}.mockup{transform:none}}
@media(max-width:600px){.hero-title{font-size:2.2rem}.hero{padding:120px 0 70px}.ft-nav{flex-direction:column}.dl-card{width:100%}.dl-opts{flex-direction:column;align-items:center}.metrics{flex-direction:column;gap:20px}.cta-title{font-size:2.4rem}}